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我寫了一個使用NEO4j作爲數據後端的spring mvc web服務器。現在我想用cassandra擴展它，所以服務器應該能夠使用這兩個數據庫。添加entityManagerFactory bean後，自動裝配控制器不起作用
我已經按照如何昆德拉（基於JPA卡桑德拉API）結合這2個教程： https://github.com/impetus-opensource/Kundera/wiki/Using-Kundera-with-Spring https://code.google.com/p/kundera/wiki/HowToUseKunderaWithSpring
，但我不能夠將EntityManagerFactory的bean添加到我的applicationContext.xml文件。
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="cassandra_pu"/>
</bean>
當我這樣做，春天給出了一個錯誤，它不能創造任何我的網絡服務器使用現有的控制器。
Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'indexController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private bmsapp.service.DataBasePopulator bmsapp.controller.IndexController.dbPopulator; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean] for bean with name 'entityManagerFactory' defined in class path resource [applicationContext.xml]; nested exception is java.lang.ClassNotFoundException: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4797)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5291)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private bmsapp.service.DataBasePopulator bmsapp.controller.IndexController.dbPopulator; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean] for bean with name 'entityManagerFactory' defined in class path resource [applicationContext.xml]; nested exception is java.lang.ClassNotFoundException: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 22 more
這些控制器都通過類文件使用註解@Controller並在使用它們的文件自動裝配他們創造。這工作正常，但是當我添加entityManagerFactory bean它突然停止工作。這怎麼可能？
我的applicationContext文件目前看起來是這樣的：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:neo4j="http://www.springframework.org/schema/data/neo4j"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/data/neo4j
http://www.springframework.org/schema/data/neo4j/spring-neo4j-2.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
">
<!-- Scans the classpath for annotated components that will be auto-registered
as Spring beans. For example @Controller and @Service. -->
<context:component-scan base-package="bmsapp" />
<!-- Activate Spring Data Neo4j repository support -->
<neo4j:config storeDirectory="data/graph.db" base-package="bmsapp.domain" />
<neo4j:repositories base-package="bmsapp.repository" />
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="messages" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="cassandra_pu"/>
</bean>
<tx:annotation-driven mode="proxy" />
<!-- context:annotation-config/-->
<!-- use this for Spring Jackson JSON support -->
<mvc:annotation-driven />
我的persistence.xml文件：
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="cassandra_pu">
<provider>com.impetus.kundera.KunderaPersistence</provider>
<properties>
<property name="kundera.nodes" value="localhost"/>
<property name="kundera.port" value="9160"/>
<property name="kundera.keyspace" value="KunderaExamples"/>
<property name="kundera.dialect" value="cassandra"/>
<property name="kundera.client.lookup.class" value="com.impetus.client.cassandra.pelops.PelopsClientFactory" />
<property name="kundera.cache.provider.class" value="com.impetus.kundera.cache.ehcache.EhCacheProvider"/>
<property name="kundera.cache.config.resource" value="/ehcache-test.xml"/>
</properties>
</persistence-unit>
SimpleComment域類：
package bmsapp.domain;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.xml.bind.annotation.XmlRootElement;
@Entity
@Table(name = "SIMPLE_COMMENT", schema = "[email protected]_pu")
@XmlRootElement(name = "SimpleComment")
public class SimpleComment {
@Id
@Column(name = "COMMENT_ID")
private int id;
@Column(name = "USER_NAME")
private String userName;
@Column(name = "COMMENT_TEXT")
private String commentText;
public SimpleComment() {
}
public SimpleComment(int commentId, String userName, String commentText) {
this.id = commentId;
this.userName = userName;
this.commentText = commentText;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getCommentText() {
return commentText;
}
public void setCommentText(String commentText) {
this.commentText = commentText;
}
}
SPRI ngExampleDao：
package bmsapp.repository;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import javax.persistence.Query;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import bmsapp.domain.SimpleComment;
@Service
public class SpringExampleDao
{
@PersistenceContext(type=PersistenceContextType.EXTENDED)
private EntityManager entityManager;
public SimpleComment addComment(int id, String userName, String commentText)
{
SimpleComment simpleComment = new SimpleComment(id, userName, commentText);
entityManager.persist(simpleComment);
return simpleComment;
}
public SimpleComment getCommentById(String Id)
{
SimpleComment simpleComment = entityManager.find(SimpleComment.class, Id);
return simpleComment;
}
public List<SimpleComment> getAllComments()
{
Query query = entityManager.createQuery("SELECT c from SimpleComment c");
List<SimpleComment> list = query.getResultList();
return list;
}
}
您使用的是什麼樣的Spring依賴關係？ – geoand